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Träfflista för sökning "WFRF:(Sjöberg Gunnar 1955 ) "

Sökning: WFRF:(Sjöberg Gunnar 1955 )

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1.
  • Bull, Cecilia, 1977-, et al. (författare)
  • A novel mouse model of radiation-induced cancer survivorship diseases of the gut.
  • 2017
  • Ingår i: American journal of physiology. Gastrointestinal and liver physiology. - 1522-1547. ; 313, s. G456-G466
  • Tidskriftsartikel (refereegranskat)abstract
    • A deeper understanding of the radiation-induced pathophysiological processes that develop in the gut is imperative in order to prevent, alleviate or eliminate cancer survivorship diseases after radiotherapy to the pelvic area. Most rodent models of high-dose gastrointestinal radiation injury are limited by high mortality. We therefore established a model that allows for the delivering of radiation in fractions at high doses, while maintaining long-term survival. Adult male C57/BL6 mice were exposed to small-field irradiation, restricted to 1,5 cm of the colorectum using a linear accelerator. Each mouse received 6 or 8 Gy, twice daily in 12 hours intervals, in 2, 3 or 4 fractions. Acute cell death was examined at 4.5 hours post-irradiation, and histological changes at six weeks post-irradiation. Another group was given 4 fractions of 8 Gy and followed over time for development of visible symptoms. Irradiation caused immediate cell death, mainly limited to the colorectum. At six weeks post-irradiation, several crypts displayed signs of radiation-induced degeneration. The degenerating crypts were seen alongside crypts that appeared perfectly healthy. Crypt survival was reduced after the fourth fraction regardless of dose, while the number of macrophages increased. Angiogenesis was induced, likely as a compensatory mechanism for hypoxia. Four months post-irradiation, mice began to show radiation-induced symptoms, and histological examination revealed an extensive crypt loss and fibrosis. Our model is uniquely suitable for studying the long-term trajectory and underlying mechanisms of radiation-induced gastrointestinal injury.
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2.
  • Karlsson, Gunnar, 1955-, et al. (författare)
  • The experience of guilt and shame : A phenomenological-psychological study
  • 2009
  • Ingår i: Human Studies. - Dordrecht The Netherlands : Springer. - 0163-8548. ; 32:3, s. 335-355
  • Tidskriftsartikel (refereegranskat)abstract
    • This study aims at discovering the essential constituents involved in the experiences of guilt and shame. Guilt concerns a subject's action or omission of action and has a clear temporal unfolding entailing a moment in which the subject lives in a care-free way. Afterwards, this moment undergoes a reconstruction, in the moment of guilt, which constitutes the moment of negligence. The reconstruction is a comprehensive transformation of one's attitude with respect to one's ego; one's action; the object of guilt and the temporal-existential experience. The main constituents concerning shame are its anchorage in the situation to which it refers; its public side involving the experience of being perceptually objectified; the exclusion of social community; the bodily experience; the revelation of an undesired self; and the genesis of shame in terms of a history of frozen now-ness. The article ends with a comparison between guilt and shame. Adapted from the source document.
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4.
  • Nyroos, Mikaela, 1973-, et al. (författare)
  • Exploring the presence of test anxiety and its relation to mathematical achievement in a sample of grade 3
  • 2012
  • Ingår i: Skrifter från Svensk matematikdidaktisk forskning, MADIF. - linköping : Svensk förening för matematikdidaktisk forskning. - 1651-3274. ; s. 151-160
  • Tidskriftsartikel (refereegranskat)abstract
    • The present study aims at exploring if a sample of Swedish grade 3 pupils reported any test anxiety and whether there were any relations to performance in different mathematical areas. Overall, test anxiety explained 20% of the variance for the total mathematical score, with the subscale “thoughts” as the significant predictor. The model of test anxiety also explained Number understanding, Mass and Time, Patterns, and Mathematical problems; however Mental arithmetic and Written arithmetic algorithms were not significantly explained by the model. Test anxiety seems not to be a major problem in this sample; still, significant negative correlations were found, which likely might influence the pupils in some aspects.
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  • Silfver, Eva, 1958-, et al. (författare)
  • Changing Our Methods and Disrupting the Power Dynamics : National Tests in Third-Grade Classrooms
  • 2013
  • Ingår i: International Journal of Qualitative Methods. - University of Alberta, Int. Inst. of Qualitative Methodology, Edmonton Clinic in Health Academy, Edmonton, Canada. - 1609-4069. ; 12, s. 39-51
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper reports on a research project relating to the newly implemented mandatory Swedish national mathematics tests for third-grade students (aged nine and ten). The project’s main research concerns the students’ ideas about and reactions towards these tests and how the specific test situation affects their perception of their own mathematical proficiency. Drawing on theories which suggest that identities are more fluid than static, we want to understand how students with special needs are ‘created’. The specific aim of this paper is to discuss how our research methods have been refined during the various phases of data collection and the resulting implications. It discusses issues surrounding child research and how methods involving video recording and video stimulated recall dialogue (VSRD) can contribute to research on children’s experiences. Particular attention is given to methodological and ethical issues; how to disrupt power relations, for example. In this paper we argue that the context of the test situation not only impacted upon the students but also affected how we changed, developed and adapted our approaches as the project evolved.
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7.
  • Sjöberg, Gunnar, 1955- (författare)
  • Alla dessa IG : kan dyskalkyli vara förklaringen?
  • 2008
  • Ingår i: Nämnaren : tidskrift för matematikundervisning. - Göteborgs universitet. - 0348-2723. ; :3, s. 13-18
  • Tidskriftsartikel (populärvet., debatt m.m.)
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8.
  • Sjöberg, Gunnar, 1955- (författare)
  • Alla dessa IG : kan dyskalkyli vara förklaringen?
  • 2014
  • Ingår i: Matematikundervisning i praktiken. - Göteborg : Nationellt centrum för matematikutbildning (NCM). - 978-91-85143-24-5 ; s. 111-119
  • Bokkapitel (populärvet., debatt m.m.)
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9.
  • Sjöberg, Gunnar, 1955- (författare)
  • Bara en termin kvar
  • 2003
  • Ingår i: Nämnaren : tidskrift för matematikundervisning. - 0348-2723. ; :2, s. 14-20
  • Tidskriftsartikel (populärvet., debatt m.m.)abstract
    • Statistisk kring hur många elever som inte når godkända betyg i grundskolan diskuteras flitigt. Men vad säger ungdomarna själva? Här ges en rapport kring 20 elevers tankar om den egna matematikundervisningen.
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